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EM6354XSP5B-2.9

更新时间：2025-06-28 05:40:20
品牌：EMMICRO
描述：Reset Circuit with Adjustable Delay

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EM6354XSP5B-2.9 概述

Reset Circuit with Adjustable Delay 复位电路，延时可调

EM6354XSP5B-2.9 数据手册

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EM MICROELECTRONIC-MARIN SA  
EM6354  
Reset Circuit with Adjustable Delay  
Description  
Features  
!
Adjustable reset timeout period using an external  
capacitor  
Ultra-low supply current of 2.9µA (VDD=3.3V)  
Operating temperature range: -40°C to +125°C  
±1.5% reset threshold accuracy  
11 reset threshold voltages VTH: 4.63V, 4.4V, 3.08V,  
2.93V, 2.63V, 2.2V, 1.8V, 1.66V, 1.57V, 1.38V, 1.31V  
3 reset output options:  
The EM6354 is an ultra-low current reset circuit available in a  
large variety of configurations and very small packages for  
maximum flexibility in all end-applications up to 125°C and  
using power supplies between 1.5V and 5.5V.  
This circuit monitors the supply voltage of any electronic  
system, and generates the appropriate reset signal. The  
threshold defines the minimum allowed voltage which  
guarantees the good functionality of the system. When VDD  
rises above VTH, the output remains active for an additional  
delay time. This allows the system to stabilize before going  
fully active. This delay time, or reset timeout period, can be  
adjusted using an external capacitor.  
The output is guaranteed to be in the correct state for VDD  
down to 0.8V. There are 11 reset threshold voltages starting  
as low as 1.31V and up to 4.63V. The EM6354 features  
three output types: active-low push-pull, active-low open-  
drain and active-high push-pull.  
Small SC70 and SOT23 packages as well as ultra-low  
supply current of 2.9µA make the EM6354 an ideal choice  
for portable and battery-operated devices.  
!
!
!
!
!
Active-low RESET push-pull  
Active-low RESET open-drain  
Active-high RESET push-pull  
!
!
!
!
Immune to short negative VDD transients  
Guaranteed Reset valid down to 0.8V  
Threshold hysteresis: 2.1% of VTH  
Very small SOT23-5L and SC70-4L (SC-82AB)  
packages  
Applications  
Typical Application  
!
!
!
!
!
!
!
!
Home appliances  
VDD  
Modems  
VDD  
*
VDD  
Routers, hubs and gateways  
WAN, LAN  
RESET  
RESET  
Handheld GPS  
MPU, DSP  
EM6354  
CD  
Metering and Instrumentation  
TV sets  
GND  
GND  
Automotive systems  
GND  
*
REXT for open-drain version only  
Block Diagram  
VDD  
Pin Configuration (top view)  
Voltage  
Reference  
-
RESET  
RESET  
1
2
3
5
CD  
RESET  
(RESET)  
Delay  
(RESET)  
1
2
4
3
GND  
CD  
Circuit  
VDD  
(RESET)  
+
VDD  
4
NC  
GND  
SOT23-5L  
SC70-4L (SC-82AB)  
CD  
GND  
Pin Description  
Pin  
Name  
Function  
SOT23-5L  
SC70-4L  
Active-low RESET output. RESET remains low for the reset timeout period after all reset  
conditions are deasserted and then goes high.  
Active-high RESET output. RESET remains high for the reset timeout period after all reset  
conditions are deasserted and then goes low.  
RESET  
RESET  
1
1
2
3
4
2
4
-
VDD  
GND  
N.C.  
Supply Voltage (5.5V max.)  
Ground  
Not connected. Not internally connected  
Connect a capacitor between CD and GND to set the timeout period  
(CD min=1nF; C D max=10000nF). Reset Timeout Period in [ms] is equal to CD in [nF]  
5
3
CD  
1
www.emmicroelectronic.com  
Copyright © 2006, EM Microelectronic-Marin SA  
03/06 – rev.I  
EM6354  
Ordering Information  
EM6354 X SP5B - 2.9 +  
Reset Output Type:  
RoHS Compliance:  
X = Active-low /RES push-pull  
Y = Active-low /RES open-drain  
Z = Active-high RES push-pull  
+ = lead-free/green mold compliant  
[blank] = leaded  
Reset Threshold Voltage (VTH):  
1.3 = 1.31V  
1.4 = 1.38V  
1.6 = 1.57V  
1.7 = 1.66V  
1.8 = 1.80V  
2.2 = 2.20V  
2.6 = 2.63V  
2.9 = 2.93V  
3.1 = 3.08V  
4.4 = 4.40V  
4.6 = 4.63V  
Package:  
SP5B = SOT23-5, Tape&Reel 3000 pcs  
SC4B = SC70-4, Tape&Reel 3000 pcs  
Note: subject to availability (see standard versions list below). Please give complete Part Number when ordering.  
Standard Versions (Top Marking)  
Top  
Top Marking 2)  
with 4  
Top  
Top Marking 2)  
with 4  
Marking1)  
Marking1)  
Part Number  
Part Number  
Characters  
Characters  
EM6354XSP5B-1.3  
EM6354XSP5B-1.8  
EM6354XSP5B-1.8+  
EM6354XSP5B-2.6  
EM6354XSP5B-2.9  
EM6354XSP5B-2.9+  
EM6354XSP5B-4.6  
EM6354XSC4B-1.3  
EM6354XSC4B-1.8  
EM6354XSC4B-2.6  
EM6354XSC4B-2.6+  
EM6354XSC4B-2.9  
EM6354XSC4B-4.6  
EM6354XSC4B-4.6+  
EM6354YSP5B-2.6  
EM6354YSP5B-4.4  
AMAA  
AMAE  
BMAE  
AMAG  
AMAH  
BMAH  
AMAL  
AMAA  
AMAE  
AMAG  
BMAG  
AMAH  
AMAL  
BMAL  
AMAT  
AMAW  
EM6354YSP5B-4.6  
EM6354YSP5B-4.6+  
EM6354XSP5B-1.3  
EM6354XSP5B-1.8  
EM6354XSP5B-2.6  
EM6354XSP5B-2.9  
AMAX  
BMAX  
AMAA  
AMAE  
AMAG  
AMAH  
K1##  
KC##  
KA##  
K4##  
KB##  
1)  
2)  
Top marking is the standard from 2006. No bottom marking exists. Where ## refers to the lot number (EM internal  
reference only)  
Top marking with 4 characters is standard from 2003. For lead-free/green mold (RoHS) parts, the first letter of top  
marking with 4 characters begins with letter “B” instead of letter “A”. Bottom marking indicates the lot number.  
Standard Versions (samples)  
Part Number  
Part Number  
EM6354XSC4B-2.6+  
EM6354XSC4B-4.6  
EM6354XSP5B-2.9+  
EM6354YSP5B-4.6+  
Sample stock is generally held on standard versions only. Non standard versions have a 30,000 pieces minimum order  
quantity. Please contact factory for other versions not shown here and for availability of non standard versions.  
2
www.emmicroelectronic.com  
Copyright  
03/06 – rev.I  
© 2006, EM Microelectronic-Marin SA  
EM6354  
Absolute Maximum Ratings  
Parameter  
Voltage at VDD to GND  
Minimum voltage at any signal  
pin  
Maximum voltage at any signal  
pin  
Electrostatic discharge max. to  
MIL-STD-883C method 3015.7  
with ref. to VSS  
Handling Procedures  
Symbol  
VDD  
Conditions  
-0.3V to +6V  
This device has built-in protection against high static  
voltages or electric fields; however, anti-static precautions  
must be taken as for any other CMOS component. Unless  
otherwise specified, proper operation can only occur when  
all terminal voltages are kept within the voltage range.  
Unused inputs must always be tied to a defined logic  
voltage level.  
VMIN  
GND - 0.3V  
VDD + 0.3V  
VMAX  
VESD  
TMAX  
2000V  
Operating Conditions  
Max. soldering conditions  
Storage Temperature Range  
250°C x 10s  
Parameter  
Supply voltage (note 1)  
Operating Temperature  
Symbol Min Max Unit  
TSTG -65°C to +150°C  
VDD  
TA  
0.8 5.5  
-40 +125 °C  
V
Stresses above these listed maximum ratings may cause  
permanent damages to the device. Exposure beyond  
specified operating conditions may affect device reliability  
or cause malfunction.  
Electrical Characteristics  
Unless otherwise specified: VDD= 0.8V to 5.5V, TA=+25°C (note 1).  
Parameter  
Symbol  
Conditions  
Min  
-
Typ  
Max  
4.6  
Unit  
+25°C  
VDD=1.5V  
VDD=3.3V  
2.3  
-40°C to +125°C  
+25°C  
-
7
-
5.5  
Supply current (note 2)  
IDD  
2.9  
3.4  
µ
A
-40°C to +125°C  
+25°C  
-
8.3  
-
6.3  
V
DD=5.0V  
-40°C to +125°C  
-
9.6  
EM6354 – 1.3  
1.290  
1.359  
1.546  
1.635  
1.773  
2.167  
2.591  
2.886  
3.034  
4.334  
4.561  
1.31  
1.38  
1.57  
1.66  
1.80  
2.20  
2.63  
2.93  
3.08  
4.40  
4.63  
1.330  
1.401  
1.594  
1.685  
1.827  
2.233  
2.669  
2.974  
3.126  
4.466  
4.699  
EM6354 – 1.4  
EM6354 – 1.6  
EM6354 – 1.7  
EM6354 – 1.8  
EM6354 – 2.2  
EM6354 – 2.6  
EM6354 – 2.9  
EM6354 – 3.1  
EM6354 – 4.4  
EM6354 – 4.6  
Threshold voltage  
(note 3)  
VTH  
V
Threshold voltage  
temperature coefficient  
(note 4)  
∆VTH  
∆TA  
TA = -40°C to +125°C  
-
-
-
-
ppm/°C  
V
±
50  
Threshold hysteresis  
VHYS  
2.1% VTH  
•
Note 1: Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested.  
VDD min=0.9V for active-high versions (EM6354Z).  
Note 2: RESET (RESET) open.  
Note 3: Threshold voltage is specified for VDD falling.  
Note 4: Typical variation ∆VTH of VTH at a given temperature TA is calculated as follows:  
∆VTH  
∆TA  
∆VTH(T = TA ) =  
× VTH × TA − 25°C  
Example:  
for version VTH=2.93V, variation at TA=70°C is equal to ∆VTH(70°C)=±50  
10-6 x 2.93 x (70-25)=±6.59mV  
•
3
www.emmicroelectronic.com  
Copyright  
03/06 – rev.I  
© 2006, EM Microelectronic-Marin SA  
EM6354  
Electrical Characteristics (continued)  
Unless otherwise specified: VDD= 0.8V to 5.5V, TA=+25° C (note 1).  
Parameter  
Symbol  
Conditions  
Min Typ Max Unit  
CD=100nF (measured value, note 5)  
Reset timeout period  
tPOR  
V
DD from 0V to VTH (typ)+15% (note 2)  
EM6354-4.6 version  
DD drops from VTH (typ)+0.2V to VTH (typ)-0.2V  
72  
2
100 122  
130 255  
ms  
Propagation delay time  
V
tP  
µ
s
(note 2)  
V
DD to RESET (RESET) delay  
V
V
V
V
V
DD>1V  
-
-
-
-
-
-
-
-
-
-
-
-
0.3  
0.3  
0.3  
0.3  
0.3  
0.3  
-
IOL=100µA  
IOL=1.5mA  
IOL=3mA  
Open-drain RESET output  
Voltage  
-40°C to +125°C  
VOL  
V
DD>2.5V  
DD>5V  
-
DD>1V  
-
IOL=100µA  
IOL=1.5mA  
IOL=3mA  
-40°C to +125°C  
-40°C to +125°C  
VOL  
DD>2.5V  
-
VDD>5V  
VDD>1V  
-
Push-pull RESET / RESET  
Output voltage  
V
0.8  
2
4
-
IOH=-30µA  
IOH=-1.5mA  
IOH=-3mA  
VOH  
V
V
DD>2.5V  
DD>5V  
-
-
Output leakage current  
ILEAK  
-40°C to +125°C, only for EM6354Y (open-drain)  
0.5  
µ
A
Note 1: Production tested at +25°C only. Over temperature limits are guaranteed by design, not production tested.  
VDD min=0.9V for active-high version (EM6354Z).  
Note 2: RESET (RESET) open.  
Note 5: tPOR is programmable by varying the value of the external capacitor connected to pin CD. The relation is tPOR (ms) =  
CD (nF). The tolerance of the capacitor should be taken into account.  
Timing Waveforms  
tSEN  
VDD  
VTH  
Overdrive  
VHYS  
0.8V  
t
logic "1"  
logic "0"  
tPOR  
tP  
RESET  
t
logic "1"  
logic "0"  
RESET  
t
Note 6: tSEN = Maximum Transient Duration. Please refer to figure on the next page.  
Note 7: Overdrive = VTH -VDD. Please refer to figure on the next page.  
4
www.emmicroelectronic.com  
Copyright  
03/06 – rev.I  
© 2006, EM Microelectronic-Marin SA  
EM6354  
Typical Reset Timeout Period  
The Reset Timeout Period (tPOR) is programmable using an external capacitor connected to pin CD of EM6354. A ceramic  
chip capacitor rated at or above 10V is sufficient. The Reset Timeout Period (tPOR) can be calculated using the following  
formula for VTH =4.63V (EM6354-4.6):  
tPOR (ms) = CD (nF).  
For example a CD of 100nF will achieve a tPOR of 100 ms. The tolerance of the capacitor should be taken into account. If no  
delay due to tPOR is needed in a certain application, the circuit EM6352 should be used instead.  
For threshold voltage between VTH=4.63V and VTH=1.31V , the following graphic applies :  
130  
120  
[ ms ]  
110  
100  
1.31  
2.93  
VTH  
4.63  
Typical Reset Timeout Period tPOR vs. VTH for CD=100nF at TA=+25°C  
[ms]  
10000  
VTH= 1.31 V  
1000  
100  
10  
VTH= 4.63 V  
1
1
10  
100  
1000  
10000  
[nF]  
Reset Timeout Period tPOR vs. Capacitor CD at TA=+25°C  
5
www.emmicroelectronic.com  
Copyright  
03/06 – rev.I  
© 2006, EM Microelectronic-Marin SA  
EM6354  
Typical Operating Characteristics  
(Typical values are at TA=+25°C unless otherwise noted, RESET or RESET open.)  
200%  
175%  
150%  
125%  
100%  
75%  
200%  
175%  
150%  
125%  
100%  
75%  
tPOR (°C)  
tPOR (25°C)  
tP (°C)  
tP (25°C)  
50%  
50%  
25%  
25%  
0%  
0%  
-50 -25  
0
25 50 75 100 125  
[°C]  
-50 -25  
0
25 50 75 100 125  
[°C]  
Reset Timeout Period tPOR vs. Temperature  
(normalized with respect to tPOR 25°C  
Propagation Time tP vs. Temperature  
(normalized with respect to tP 25°C)  
)
7
400  
350  
300  
250  
VDD 3 . 3 V  
6
5
4
3
2
1
0
VDD 5 . 0 V  
[ us ]  
[ uA ]  
Reset occurs  
above this line  
200  
150  
100  
50  
VDD 1. 5 V  
0
-50 -25  
0
25  
50  
[ °C ]  
75 100 125  
1
10  
100  
1000  
[ mV ]  
IDD vs. Temperature  
Maximum Transient Duration tSEN  
vs. Overdrive VTH-VDD  
8%  
6%  
4%  
2%  
0%  
-2%  
-4%  
-6%  
-8%  
[°C]  
-50  
-25  
0
25  
50  
75  
100  
125  
Threshold Voltage Variation vs. Temperature (normalized)  
6
www.emmicroelectronic.com  
Copyright  
03/06 – rev.I  
© 2006, EM Microelectronic-Marin SA  
EM6354  
Package Information  
SOT23-5L  
D
E1  
E
C
A2 A  
A1  
L
b
e
SYMBOL MIN TYP MAX  
A
0.90 1.30 1.45  
0.05 0.08 0.15  
0.90 1.15 1.30  
A1  
A2  
b
0.35  
0.08  
0.50  
0.20  
C
D
E
2.80 2.90 3.00  
2.60 2.80 3.00  
E1  
e
e1  
L
1.50  
1.75  
0.95  
1.90  
0.45  
e1  
Dimensions are in mm  
SYMBOL  
MIN  
MAX  
SC70-4L  
D
e
e1  
D
0.65 BSC  
0.5 BSC  
1.80  
e
e
L
2.20  
0.30  
0.70  
1.35  
2.40  
0.40  
1.00  
0.10  
1.10  
0.18  
0.30  
b
0.15  
0.575  
1.15  
1.80  
0.10  
0.80  
0.00  
0.80  
0.10  
0.10  
b1  
E
HE  
E
HE  
Q1  
A2  
A1  
A
PIN 1  
e1  
Q1  
b
b1  
c
c
NOTE:  
" All dimensions are in millimeters  
" Dimensions are inclusive of plating  
L
A2  
A
" Dimensions are exclusive of mold flash & metal burr  
" All specifications comply to EIAJ SC70  
" Even though the width of pin 2 on SC70-4L is slightly larger than on so-  
called 4-pin SC-82AB, the footprint of SC70-4L package is compatible  
with the footprint of SC-82AB package from other suppliers, and thus  
suitable for pin-to-pin replacement. Please check footprint on PCB.  
A1  
Traceability for small packages  
Due to the limited space on the package surface, the bottom marking contains a limited number of characters that provide only partial  
information for lot traceability. Full information for complete traceability is however provided on the packing labels of the product at delivery  
from EM. It is highly recommended that the customer insures full lot traceability of EM product in his final product.  
EM Microelectronic-Marin SA (EM) makes no warranty for the use of its products, other than those expressly contained in the Company's  
standard warranty which is detailed in EM's General Terms of Sale located on the Company's web site. EM assumes no responsibility for  
any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without  
notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual  
property of EM are granted in connection with the sale of EM products, expressly or by implications. EM's products are not authorized for  
use as components in life support devices or systems.  
Product qualification is performed according to internal EM quality standards for industrial products. For any special requirement (eg. automotive grade) please  
contact EM Microelectronic-Marin S.A.  
7
www.emmicroelectronic.com  
Copyright  
03/06 – rev.I  
© 2006, EM Microelectronic-Marin SA  

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